Power Fault; Alarm Reset - Supermicro X7DB8 User Manual

X7DB8/X7DBE User's Manual
Power Fault (PWR Supply
Failure)
Connect a cable from your power
supply to the Power Fail (PSF) header
to provide warnings of power supply
failure. This warning signal is passed
through the PWR_LED pin to indicate
of a power failure on the chassis.
See the table on the right for pin
defi nitions.

Alarm Reset

If three power supplies are installed
and Alarm Reset (JAR) is enabled, the
system will notify you when any of the
three power modules fails. Connect
JAR to a micro-switch to enable you
to turn off the alarm that is activated
when a power module fails. See the
table on the right for pin defi nitions.
GLAN1
GLAN2
SIMLP IPMI
SEPC
PCI-Exp x8
PCI-Exp x4
PWR Supply Fail LED
Pin Defi nitions
Pin# Defi nition
1 PWR 1: Fail
2 PWR 2: Fail
3 PWR 3: Fail
4 Signal: Alarm Reset
Note: This feature is only available when using
Supermicro redundant power supplies.
Pin Defi nitions
Pin Setting
Pin 1
Pin 2
A
8-pin PWR
SMB PS PSF
J3P
JAR
B
SCSI CTRL
320 SCSI Channel B
2-20
Alarm Reset
Defi nition
Ground
+5V
A. Power Fault
B. Alarm Reset